most residents are nervous the city of napa where in 2005 they had massive floods. that destroyed or damaged a thousand homes. this time the officials are saying that they are prepared for one, shannon. >> because of the history of flooding in napa we have a good idea of where the water will come out first. we know there are certain points so we can plan in advance. at this moment if the projections of the rainfall totals are accurate, we are probably looking at the street flooding. intersections being flooded. nothing terribly serious. i say it with a caveat. >> reporter: the floodwaters expected to rise about two foot above flood levels. that should happen between 1:00 p.m. and 5:00 p.m. eastern time. you are looking now at south of petaluma where the petaluma river is expected to flood in the next couple of hours. the weather front is moving south, which is why you are seeing all that gray cloud over there. we have got flood warning for pen grove, willow creek and marion county. ton of truckee near lake tahoe is described as a ghost town because they expect the f